WordReference Random House Unabridged Dictionary of American English © 2025
expan′sion joint′, 
  1. Buildinga joint between two parts of a structure, machine, etc., permitting expansion, as from heat, without structural damage.
  • 1840–50

'expansion joint' also found in these entries (note: many are not synonyms or translations):
bellows

Forum discussions with the word(s) "expansion joint" in the title:


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